refactor(api): replace new Logger() with DI LoggerService and split large files

- Migrate 30 files from `new Logger(ClassName.name)` to injected LoggerService
  for consistent PII masking and centralized logging config
- Split prisma-admin-query.repository.ts (313→121 lines) into admin-stats.queries.ts
  and admin-user.queries.ts
- Split admin.controller.ts (285→154 lines) into admin-moderation.controller.ts
- Split prisma-listing.repository.ts (274→111 lines) into listing-read.queries.ts
- Update 28 test files with mock LoggerService
- All 831 tests passing, zero direct new Logger() calls remaining

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/payments/infrastructure/services/zalopay.service.ts

@@ -1,7 +1,8 @@
 import * as crypto from 'crypto';
-import { Injectable, Logger } from '@nestjs/common';
+import { Injectable } from '@nestjs/common';
 import { type ConfigService } from '@nestjs/config';
 import { type PaymentProvider } from '@prisma/client';
+import { type LoggerService } from '@modules/shared';
 import {
   type IPaymentGateway,
   type CreatePaymentUrlParams,
@@ -13,7 +14,6 @@ import {
 
 @Injectable()
 export class ZalopayService implements IPaymentGateway {
-  private readonly logger = new Logger(ZalopayService.name);
   readonly provider: PaymentProvider = 'ZALOPAY';
 
   private readonly appId: string;
@@ -21,7 +21,10 @@ export class ZalopayService implements IPaymentGateway {
   private readonly key2: string;
   private readonly endpoint: string;
 
-  constructor(private readonly config: ConfigService) {
+  constructor(
+    private readonly config: ConfigService,
+    private readonly logger: LoggerService,
+  ) {
     this.appId = this.config.getOrThrow<string>('ZALOPAY_APP_ID');
     this.key1 = this.config.getOrThrow<string>('ZALOPAY_KEY1');
     this.key2 = this.config.getOrThrow<string>('ZALOPAY_KEY2');
@@ -80,14 +83,14 @@ export class ZalopayService implements IPaymentGateway {
         throw new Error(`ZaloPay create payment failed: return_code=${result.return_code}`);
       }
 
-      this.logger.log(`ZaloPay payment URL created for order ${params.orderId}`);
+      this.logger.log(`ZaloPay payment URL created for order ${params.orderId}`, 'ZalopayService');
 
       return {
         paymentUrl: result.order_url,
         providerTxId: appTransId,
       };
     } catch (error) {
-      this.logger.error(`ZaloPay createPaymentUrl error: ${error}`);
+      this.logger.error(`ZaloPay createPaymentUrl error: ${error}`, undefined, 'ZalopayService');
       throw error;
     }
   }
@@ -128,6 +131,7 @@ export class ZalopayService implements IPaymentGateway {
 
     this.logger.log(
       `ZaloPay callback verified: orderId=${orderId}, valid=${isValid}`,
+      'ZalopayService',
     );
 
     return {
@@ -179,6 +183,7 @@ export class ZalopayService implements IPaymentGateway {
 
       this.logger.log(
         `ZaloPay refund ${success ? 'successful' : 'failed'} for ${params.providerTxId}`,
+        'ZalopayService',
       );
 
       return {
@@ -186,7 +191,7 @@ export class ZalopayService implements IPaymentGateway {
         refundTxId: success ? mRefundId : null,
       };
     } catch (error) {
-      this.logger.error(`ZaloPay refund error: ${error}`);
+      this.logger.error(`ZaloPay refund error: ${error}`, undefined, 'ZalopayService');
       return { success: false, refundTxId: null };
     }
   }